EP0993931A2 - Rouleau en plastique - Google Patents

Rouleau en plastique Download PDF

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Publication number
EP0993931A2
EP0993931A2 EP99118294A EP99118294A EP0993931A2 EP 0993931 A2 EP0993931 A2 EP 0993931A2 EP 99118294 A EP99118294 A EP 99118294A EP 99118294 A EP99118294 A EP 99118294A EP 0993931 A2 EP0993931 A2 EP 0993931A2
Authority
EP
European Patent Office
Prior art keywords
injection mold
sleeve
tread
parts
bearing bush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99118294A
Other languages
German (de)
English (en)
Other versions
EP0993931A3 (fr
EP0993931B1 (fr
Inventor
Friedrich Hachtel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0993931A2 publication Critical patent/EP0993931A2/fr
Publication of EP0993931A3 publication Critical patent/EP0993931A3/fr
Application granted granted Critical
Publication of EP0993931B1 publication Critical patent/EP0993931B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/50—Racks ; Baskets
    • A47L15/507—Arrangements for extracting racks, e.g. roller supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one

Definitions

  • the invention relates to a roller made of plastic, in particular for pull-outs of dishwashers, with a tread, those composed of two in the axial direction Parts is formed, and with a bearing bush.
  • rollers run on pull-outs of dishwashers on stainless steel rails. Because of the friction between the two the tread-forming parts and the bearing bush however, rolling on the stainless steel rail under load, for example, when the drawers of the dishwasher are filled are not guaranteed. The roller then grinds on the rails. This problem can be changed of the radius of the bearing bush in relation to the radius of the remove the parts that form the tread. It did however, the radius difference is shown to be considerable to achieve the desired effect. But that would be a completely new design of the roller is required.
  • the present invention has for its object a To improve the roller of the type mentioned at the beginning, that rolling of the roller on a rail also is guaranteed under load.
  • the object is achieved with a roller of the type mentioned solved that between the two the tread forming parts and the bearing bush from a sleeve a plastic material with good sliding properties is.
  • the material of this sleeve can, for example, be made of PTFE exist. Through this material, the friction between the parts forming the tread and the bearing bush considerably reduced.
  • the bearing bush and the Tread-forming parts can either be the same Plastic material or from different plastic materials be made.
  • the bearing bush can now be made of a highly lubricious material can also be made from a less expensive plastic than before, so the extra cost of manufacturing the Sleeve can be almost compensated.
  • the bearing bush can also be in the same injection mold as the other parts are cast and after twisting the mold halves by means of an axially displaceable part of the Injection mold to be pressed into the sleeve. Does it exist Bearing bush made of the same material as the two tread parts, a two-component injection molding machine can do this be used. With different materials for the bearing bush and the tread parts, however, is one Three-component machine required. There is an alternative of course in it, only the sleeve and the two tread parts to cast in a two-component injection molding machine and assemble and then in a separate assembly step on another machine and in another Material made bearing bush in the sleeve of the roller press in. This procedure is described below using the Drawing described in more detail.
  • Fig. 1 shows a roller 10, the tread 11 of a first tread part 12 and a second tread part 13 is formed, the two parts 12 and 13 on a bearing bush 14 are arranged. Between the tread part 12 and the bearing bush 14 is a sleeve 15 made of a well slidable Material arranged. This sleeve 15 enables one Unrolling the roller 10 on a rail 16, even if the Role is loaded.
  • 3 to 6 show the manufacture of the individual parts in an injection molding machine.
  • Fig. 3 relates to the injection molding of the sleeve 15 from a well lubricious plastic such as PTFE in an injection mold 20.
  • the cavity for forming the sleeve 15 is opened by the right mold half 21 released.
  • the sleeve 15 will on the left injection mold half 22 shown in FIG. 4 captured.
  • the two mold halves 21 and 22 rotated against each other until the sleeve 15 a cavity 23 in the mold half 21 for molding of the tread part 12 faces.
  • the tread part 12 is sprayed onto the sleeve 15.
  • Fig. 4 shows the tread part sprayed onto the sleeve 15 12. Both parts 12 and 15 are together in the mold half 22 recorded. The two mold halves 21 and 22 are open.
  • FIG. 5 In parallel to the spraying of the tread part 12, FIG another cavity of the injection mold the injection molding of the second tread part 13, as shown in FIG. 5.
  • the tread part 13 is opened after opening the injection mold 20 in the right mold half 21 held. Then there will be the two injection mold halves 21 and 22 again against each other twisted until the sleeve 15 with the first tread part 12 faces the second tread part 13.
  • the Tread part 12 and the tread part 13 are by means of axially displaceable injection mold parts 24, 25 pressed together and assembled with it.
  • bearing bush 14 which is not shown here is.
  • the bearing bush 14 could also be in the injection mold 20 manufactured and in a further assembly step in the sleeve 15 are pressed. But also the production of the Bearing bush 14 in another machine and a final assembly the parts outside the injection mold are possible.
  • Fig. 7 shows schematically the arrangement of the cavities for the Sleeve 15, the first tread part 12 and the second tread part 13 in the injection mold 20.
  • the cavities are spaced from each other by 120 °. 3 to 6 show, the injection mold 20 is formed by two halves, which can be moved relative to one another about a common axis of rotation D. are such that the individual cavities 23, 26 and 27 manufactured parts 12, 15, 13 after corresponding rotation of the two injection mold halves 21 and 22 still in the injection mold 20 can be mounted.
  • the bearing bush 14 can be produced in the same injection mold 20 a fourth cavity and all should be provided Cavities must be spaced 90 ° apart.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Sliding-Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Tires In General (AREA)
EP19990118294 1998-09-22 1999-09-15 Rouleau en plastique Expired - Lifetime EP0993931B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998143277 DE19843277B4 (de) 1998-09-22 1998-09-22 Laufrolle aus Kunststoff und Verfahren zur Herstellung
DE19843277 1998-09-22

Publications (3)

Publication Number Publication Date
EP0993931A2 true EP0993931A2 (fr) 2000-04-19
EP0993931A3 EP0993931A3 (fr) 2001-09-12
EP0993931B1 EP0993931B1 (fr) 2003-03-05

Family

ID=7881731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990118294 Expired - Lifetime EP0993931B1 (fr) 1998-09-22 1999-09-15 Rouleau en plastique

Country Status (3)

Country Link
EP (1) EP0993931B1 (fr)
DE (1) DE19843277B4 (fr)
ES (1) ES2190158T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1602317A3 (fr) * 2004-05-17 2006-09-06 Friedrich Hachtel Palier encliquetable avec protection contre le démontage.
EP3813628A4 (fr) * 2018-07-13 2021-05-05 Samsung Electronics Co., Ltd. Rouleau, son procédé de fabrication et lave-vaisselle le comprenant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10049490A1 (de) * 2000-10-06 2002-04-11 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einem ausziehbar gelagerten Geschirrkorb

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1741468U (de) * 1956-06-12 1957-03-14 Gmeinder & Co Lokomotiven Und Lagerung fuer laufrollen, stuetzrollen und leitraeder, insbesondere fuer gleiskettenfahrzeuge.
AT285867B (de) * 1969-04-25 1970-11-10 Blum Gmbh Julius Laufrolle für Auszugschienen von Schubladen od.dgl.
US3785217A (en) * 1972-07-17 1974-01-15 Cons Foods Corp Roller assembly and method of making the same
DE19607645A1 (de) * 1996-02-29 1997-09-04 F & G Hachtel Gmbh & Co Verfahren, spritzgegossene Laufrolle und Spritzgießform zur Herstellung einer Laufrolle
DE19615835A1 (de) * 1996-04-20 1997-10-23 Otto Geb Kg Radsystem für Müllbehälter
DE19754733A1 (de) * 1997-12-10 1999-06-17 F & G Hachtel Gmbh & Co Verfahren zur Herstellung eines spritzgegossenen Bauteils

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1602317A3 (fr) * 2004-05-17 2006-09-06 Friedrich Hachtel Palier encliquetable avec protection contre le démontage.
EP3813628A4 (fr) * 2018-07-13 2021-05-05 Samsung Electronics Co., Ltd. Rouleau, son procédé de fabrication et lave-vaisselle le comprenant
US11166619B2 (en) 2018-07-13 2021-11-09 Samsung Electronics Co., Ltd. Roller, method of manufacturing the same, and dish washer having the same

Also Published As

Publication number Publication date
DE19843277B4 (de) 2007-06-14
ES2190158T3 (es) 2003-07-16
DE19843277A1 (de) 2000-03-23
EP0993931A3 (fr) 2001-09-12
EP0993931B1 (fr) 2003-03-05

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